If you are looking for a cheap upgrade to your system that is going to give you the latest in mainstream DirectX 11 cards, you are going to be looking at getting either an HD 5670 or HD 5550 and Sapphire has a great lineup when it comes to either of these models with their HD 5670 Ultimate and the HD 5550 OC. For the $20 difference between the two cards, I would put my money on the HD 5670 Ultimate, not only are you going to get better performance and a faster card, you are also going to be getting a few included accessories and a much higher overclocking headroom.